Things, a lot of them software, that I found interesting. Everything I link to is free/open source unless specified otherwise.
Full Suites
Mox
Poste.io
Mail-in-a-Box
Mailcow
Mercury
SMTP Server
Haraka
The Open Service Initiative is all about providing TRULY free, open-source, tools and complete platforms to MSPs. AGPLv3, MIT, and Apache 2 ...
